To Boise

Cheap Flights from San Diego to Boise

Browse current best options from San Diego. Become a member to unlock all deals and get alerts when new deals appear.

Deals from

San Diego

RatePunk searches hundreds of travel sites at once for deals on flights to Boise

Prices updated 24 days ago

486,190 searches this week

171 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated May 29, 2026.)

Today’s best flight deals from San Diego to Boise

Explore current cheapest deals departing from San Diego to Boise

Round trip

Sort by: Cheapest

August 5 - August 11

Cheapest

Best

Earliest

SAN - Boise

$210

$138

Round trip

August 19 - August 20

Best

SAN - Boise

$226

$150

Round trip

August 11 - August 15

SAN - Boise

$223

$150

Round trip

September 15 - September 16

SAN - Boise

$149

$157

Round trip

August 18 - September 1

SAN - Boise

$196

$157

Round trip

August 18 - September 15

SAN - Boise

$188

$157

Round trip

August 18 - August 25

SAN - Boise

$216

$157

Round trip

August 18 - September 8

SAN - Boise

$190

$157

Round trip

September 29 - October 28

SAN - Boise

$139

$157

Round trip

September 29 - October 27

SAN - Boise

$139

$157

Round trip

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Route Intelligence — 486,190 Searches this Week

Insights for flights from San Diego to Boise

A meaningful share of recent fares for flights from San Diego to Boise are non-stop, at 65.4% of itineraries. For the remaining itineraries that include connections, the typical number of stopovers is 2. This means you will find a mix of options when planning your trip.

The journey from San Diego to Boise typically takes 4h 47m, including connections. This median duration accounts for both direct and connecting itineraries, providing a realistic expectation for your travel time.

When is the cheapest time to fly from San Diego to Boise? You'll find the most affordable fares in December, July, and January, all with a median price of $149. These months offer the best value for your trip, making them ideal for budget-conscious travelers.

Right now, cheap flights from San Diego to Boise typically range from $169–$725, with a median fare of $197. Current fares are significantly above the typical level for this route. Only 6% of recent fares were classified as a good price, indicating that finding a deal may require some flexibility. New deals appear almost daily, so setting up a price alert could be beneficial.

How much is a round trip from San Diego to Boise

Regular price: $150 - $295

Prices for flights from San Diego to Boise are currently below the regular range.

The regular price range for flights from San Diego to Boise is between $150 and $295. The current lowest deal is $138 with Alaska Airlines, Inc. for travel from Aug 5 to Aug 11.

now $138

Low $150

High $295

The cheapest time to fly from San Diego to Boise

The cheapest month to fly from San Diego to Boise is January, with a median price of $149. The most expensive month is November, with a median price of $880. Prices are generally lower from January to December.

January

Cheapest

Flights from $149

November

Most Expensive

Flights from $880

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from San Diego to Boise

Alaska Airlines, Inc.

Last-minute flights going from San Diego to Boise

Wed, Jun 17

⌛ Last-Minute

SAN - Boise

San Diego (SAN) - Boise (BOI)

United Airlines

$447

$350

One-way

Fri, Jun 19

⌛ Last-Minute

SAN - Boise

San Diego (SAN) - Boise (BOI)

$450

$351

One-way

Fri, Jul 3

⌛ Last-Minute

SAN - Boise

San Diego (SAN) - Boise (BOI)

Alaska Airlines, Inc.

$344

$278

One-way

Sat, Jul 4

⌛ Last-Minute

SAN - Boise

San Diego (SAN) - Boise (BOI)

United Airlines

$342

$183

One-way

Tue, Jul 7

⌛ Last-Minute

SAN - Boise

San Diego (SAN) - Boise (BOI)

$313

$177

One-way

Tue, Jul 7

⌛ Last-Minute

SAN - Boise

San Diego (SAN) - Boise (BOI)

$336

$237

One-way

Biggest price drops on these dates for flights from San Diego to Boise

5 nights

Aug 28 - Sep 2

$380 → $183

52%

3 nights

Aug 28 - Aug 31

$383 → $187

51%

4 nights

Aug 20 - Aug 24

$382 → $187

51%

3 nights

Aug 17 - Aug 20

$382 → $189

51%

Popular Airports to fly from San Diego to Boise

San Diego - Boise route insights

💸 Price insights

Recent fares are above the typical level.

Recent fares for San Diego to Boise are above the typical level at $138.

📅 Best time to fly

Fly in December, July, or January for the best prices.

Historically, the cheapest months to fly from San Diego to Boise are December, July, and January.

⏱️ Flight duration

Direct flights take 4h 47m.

The typical direct flight from San Diego to Boise takes 4 hours and 47 minutes.

✈️ Airlines & availability

Deals are frequent for this route.

This route typically has frequent deals, with 1.03 deals per day over the last 30 days.

🏆 Airline highlight

Alaska Airlines, Inc. offers direct flights.

Alaska Airlines, Inc. has offered direct flights from San Diego to Boise in recent deals.

🎯 Booking tip

Only 6% of deals are considered good.

Historically, only 6% of deals for this route were considered good prices.

San Diego main airports to depart from

San Diego International (SAN)

Cheapest

San Diego International is a convenient option for flights from San Diego to Boise.

📍 ~5 km from San Diego city center (reachable by car)

💸 Flights from ~$138

McClellan–Palomar (CLD)

McClellan–Palomar is an alternative departure airport for flights from San Diego to Boise.

📍 ~40 km from San Diego city center (reachable by car)

💸 Flights from ~$309

Boise main airports to arrive at

Boise (BOI)

Cheapest

Boise Airport is a convenient arrival choice for flights from San Diego to Boise.

📍 ~6 km from city center (reachable by car)

💸 Flights from ~$138

Airports nearby Boise used as alternative

Salt Lake City International (SLC)

Cheapest

Salt Lake City International is a major international hub with extensive direct flight options, ideal for long-haul or international travel.

📍 ~540 km from Boise (reachable by car)

💸 Flights from ~$136

Spokane International (GEG)

Spokane International is a large regional airport with competitive pricing and multiple carriers, good for Pacific Northwest or Midwest flights.

📍 ~460 km from Boise (reachable by car)

💸 Flights from ~$153

Tri-Cities (PSC)

Tri-Cities offers several daily connections to major West Coast hubs with reasonable driving distance from Boise.

📍 ~290 km from Boise (reachable by car)

💸 Flights from ~$207

Idaho Falls Regional (IDA)

Idaho Falls Regional is a significant regional airport within Idaho, convenient for domestic connections within the Intermountain West.

📍 ~330 km from Boise (reachable by car)

💸 Flights from ~$168

Bozeman Yellowstone International (BZN)

Bozeman Yellowstone International offers robust regional service with multiple airline options and a wide range of flights.

📍 ~460 km from Boise (reachable by car)

💸 Flights from ~$156

Business & First Class Flight Deals to Boise

48% AI deal score

$667

From SAN

Elite

Sep 17

Boise, United States

47% AI deal score

$807

From SAN

Elite

Jun 27

Boise, United States

46% AI deal score

Boise, United States

33% AI deal score

$2,655

From SAN

Elite

Jun 28

Boise, United States

32% AI deal score

$1,890

Frequently Asked Questions About Flights to Boise

Historically, the optimal booking window for flights from San Diego to Boise is typically between 28 and 59 days prior to departure. During this period, the average price observed was $173. Booking within 7-13 days of departure saw an average price of $219, while booking 0-6 days out increased the average price to $296. For those booking 60+ days in advance, the average price was significantly higher at $498.

Across the trailing quarter, a good price for a flight from San Diego to Boise was considered to be $169 or less. The median price for this route was $197. Fares at the 75th percentile were around $725, indicating that prices can vary significantly.

Historically, the cheapest months to fly from San Diego to Boise have been December, July, and January, all with a median price of $149. The annual median price for this route is $197. While December is listed as one of the cheapest months, it also represents the most expensive month based on median prices in the trailing 270 days.

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